<span lang="EN-US">The world's increasing demand for energy coupled with dwindling natural resources has spurred the need alternative and renewable sources. However, one of biggest drawbacks is its intermittency. Currently, most electrical comes from thermal power nuclear combined. Despite being heavily reliant on imports, Morocco made progress in developing solar capacity an installed 76...

We propose a new approach for the realization of very low noise programmable current sources mainly intended for application in the field of low frequency noise measurements. The design is based on a low noise Junction Field Effect Transistor (JFET) acting as a high impedance current source and programmability is obtained by resorting to a low noise, programmable floating voltage source that al...

The effective actions of a scalar and massless spin-half field are determined as functions of the deformation of a symmetrically squashed three-sphere. The extreme oblate case is particularly examined as per-tinant to a high temperature statistical mechanical interpretation that may be relevant for the holographic principle. Interpreting the squashing parameter as a temperature, we find that th...

with the increasing installed capacity of desalination, the greenhouse gas emission for generating the required energy to power the desalination plants is also becoming the focus of attention in the world community. domestic reverse osmosis membranes have been very successful technology especially in the developing world to provide safe drinking water. the novel concept of photovoltaic powered ...

Our research aims to achieve dual-positive effects in the presented study by raising photovoltaic (PV) panels over water surface. With this, target experiments were primarily conducted evaluate efficiency increments of PV panel while reducing its operating temperature through passive convective cooling obtained it water. The following objective was estimate reduction evaporation due shading eff...

increasing of word demand load caused a new distributed generation (dg) to enter to powersystem. one of the most renewable energy is the photovoltaic system. it is beneficial to use thissystem in both separately as well as connected to power system using power electronics interface.in this paper an optimal pid controller for photovoltaic system systems has been developed. theoptimization techni...